At least three law enforcement agencies responded after the family called for help just after noon, saying Vidal was in the midst of a schizophrenic episode.

Vidal was declared dead of a gunshot wound at a hospital.

Jerry Dove, chief of the Southport police, one of the responding agencies, said at a news conference that Detective Byron Vassey, a nine-year veteran of the department, had been placed on administrative leave. He wouldn't say whether Vassey was believed to be the officer who fired the shot.

Vidal's family showed up at the news conference — to which they said they weren’t invited — carrying placards, demanding justice and insisting that their son posed no threat when he was shot.

Mark Wilsey, the young man's stepfather, told reporters that the family called police to help subdue Vidal because he was holding a small screwdriver and threatening to fight his mother during a schizophrenic episode.

But the situation appeared to be under control, with two officers restraining the 90-pound Vidal, when the third officer arrived and shot Vidal point-blank, Wilsey contended.

"Then all of a sudden, this Southport cop came, walked in the house [and said]: 'I don't have time for this. Tase him. Let's get him out of here,'" Wilsey said.

An officer used a stun gun on Vidal, "he hit the ground [and] this guy shot him," Wilsey said.